Improvement in boilers



T. S. LAMBERT;

Boiler. No. 40,172. Patented Oct. 6, 1863.

lnventor: Witnesses:

N. mans HaoloLhhogW wax-aw, D. I;

" UNITED STATES PATENT Orr ICE.

T. S. LAMBERT, OF PEEKSKILL, NET/V YORK.

IMPROVEMENT IN BOILERS Specification forming part of Letters Patent No. 40, 172, dated February 6, 1863.

To all whom it may concern:

Be itknown that I, T. S. LAMBERT, of Peekskill, Westchester count-y, New York State, have invented a new and Improved Boiler and Furnace Combined; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanyin g drawings, and the letters and figures marked thereon.

The nature of my invention consists in increasing the surfaces through which the heat produced in' the furnace acts upon the water in the boiler, thereby diminishing the quantity of fuel required to produce a given effect and at the same time diminishing the period required to produce it.

Figure A is a vertical section of a combined furnace and boiler. A is the boiler, of any desirable dimensions. It is composed of any suitable material, usually of tin. It is to be raised upon a proper number of legs, the number depending upon the size of the boiler, usually three for a ten-gallon, and four for a larger one. The height of the legs must'depend upon the height of the furnace, its height from the ground, and how high it is fastened upon the side of the boiler. The legs may be made of any suitable material, usually of tin soldered to the bottom of the boiler, and braced by rods, usually of tin, passing from leg to leg and to the bottom of the furnace on a level with it. The boiler shouldbe covered with a cover of its entire diameter, like that of a pail.

Two holes, sized according to the boiler, but usually about two inches in diameter, exist one in the side near the bottom, and the other in the bottom near the side-as seen at b and cylinder, usually composed of tin, but may be made of copper, or an other suitable material.

- The height and diameter of these cylinders will vary according as the size of the boiler does; but usually the inner one is about six and the outer one about eight inches in diameter, their height being about fourteen. The space between is closed above and below by a rim, the edges of which are turned Over the ends of the cylinder. The space between the cylinders is also closed for one-half or two-thirds of its circumference half-way from the bottom to the top of the cylinders. erepresents the outer, f the inner, cylinder, 9 the upper, h the lower, rim, and i the dividing-partition. This partition or diaphragm is situated horizontally about midway between the top and bottom of the cylinders, and stretchin g across from the outer to the inner cylinder. The partition reaches around between the cylinders to the extent of onehalf to two-thirds of the circumference of the cylinders. The efi'ect of this partition or diaphragm is to compel the water that falls through the lower hole, I, to pass to the other or opposite inner surfaces of the cylinders before the water can pass up and return through the upper hole, is, to the reservoir, thus causing the water to pass over a greater heatingsurface on its way round from the reservoir back to the same than would be the case without this partition.

Thereis a hole in the outer cylinder near its upper end, and another near its lower end, as seen at k and l. These holes connect with the holes in the boiler, either directly or by tubes, so thatthe water through one hole in the boiler passes down around the lower part of the furnace, up and around the upper part, and through the upper hole into the boiler.

C is a hood, covering the furnace within an inch or two of its top'and sides. It is 00111- posed of sheetiron or other proper material, reaches nearly or quite to the bottom of the furnace, has its bottom edge turned in to close the space between it and the sides of the furnace, and has a slot upon one side, the edges of which are also turned in to. fit around the connections between the boiler and furnace. To one side, near the bottom, a collar is attached, receiving a pipe, m, for increasing the draft. In the top of this hood there is a cover the size of the inner diameter of the furnace, and in this cover a collar to receive the pipe m when it is desirable to have the draft direct. At other times a cap, it, covers it.

The hood is movable upon the outside of the outer cylinder, so that it can be raised at pleasure, and thus the draft over the top of the cylinders and down the outside regulated, since the hood can be held at a" point half-way down the outside or at any other point, while over the cylinders the hood will form a chamber for retaining the heat and throwing down the heat upon the cylinders, while the heat will also, in a limited degree, be communicated from the hood to the water of the reservoir through their sides.

o'is a leg for receiving the weight of the furnace. p is a grate at the bottom of the furnace, supported in any most convenient manner. s is the cover of the hood. The office of the hood is to cause the heat produced in the furnace to act upon the outside of the cylinder to check the draft, and thus economize the coal, as well as make it more efficient.

What I claim as my invention, and desire to,

T. S. LAMB ERT/ WVitnesses; v

EDM. F. BROWN, GnA. 0, SMITH. 

